Portnahaven weather

The Portnahaven weather guide shows monthly weather averages (including daytime and night-time temperatures, rainfall and hours of sunshine) for holidays in Portnahaven, Argyll and Bute, Scotland in 2026/2027.

• Portnahaven weather averages
• Portnahaven weather by month
• Back to Argyll and Bute
• Back to Scotland

Portnahaven weather averages

Check the Portnahaven weather averages for each month of the year including maximum daytime and minimum night-time temperatures, monthly rainfall, number of days with rain and average daily hours of sunshine for Portnahaven, Argyll and Bute, Scotland.

Back to top

Portnahaven weather by month

Check the weather for Portnahaven, Argyll and Bute, Scotland for a particular month by selecting from the list below. This gives the best indication of what to expect from the weather months in advance.

• January
• February
• March
• April
• May
• June
• July
• August
• September
• October
• November
• December

Back to top

Portnahaven weather in January

The average maximum daytime temperature in Portnahaven in January is a cold 7°C (45°F), while the average minimum night-time temperature is a cold 2°C (36°F). You can expect on average 1 hours of sunshine a day in Portnahaven during January.

• 7
  7°C max day temperature
• 1
  1 hour of sunshine per day
• 22
  22 days with some rainfall
• 2
  2°C min night temperature
• 204
  204 mm of monthly rainfall

On average 204 mm (8 inches) of rain normally falls in Portnahaven during January with rain falling on 22 days of the month.

Back to months

Portnahaven weather in February

The average maximum daytime temperature in Portnahaven in February is a cold 7°C (45°F), while the average minimum night-time temperature is a cold 2°C (36°F). You can expect on average 2 hours of sunshine a day in Portnahaven during February.

• 7
  7°C max day temperature
• 2
  2 hours of sunshine per day
• 19
  19 days with some rainfall
• 2
  2°C min night temperature
• 148
  148 mm of monthly rainfall

On average 148 mm (5.8 inches) of rain normally falls in Portnahaven during February with rain falling on 19 days of the month.

Back to months

Portnahaven weather in March

The average maximum daytime temperature in Portnahaven in March is a cool 8°C (46°F), while the average minimum night-time temperature is a cold 2°C (36°F). You can expect on average 3 hours of sunshine a day in Portnahaven during March.

• 8
  8°C max day temperature
• 3
  3 hours of sunshine per day
• 20
  20 days with some rainfall
• 2
  2°C min night temperature
• 159
  159 mm of monthly rainfall

On average 159 mm (6.3 inches) of rain normally falls in Portnahaven during March with rain falling on 20 days of the month.

Back to months

Portnahaven weather in April

The average maximum daytime temperature in Portnahaven in April is a cool 11°C (52°F), while the average minimum night-time temperature is a cold 4°C (39°F). You can expect on average 5 hours of sunshine a day in Portnahaven during April.

• 11
  11°C max day temperature
• 5
  5 hours of sunshine per day
• 17
  17 days with some rainfall
• 4
  4°C min night temperature
• 107
  107 mm of monthly rainfall

On average 107 mm (4.2 inches) of rain normally falls in Portnahaven during April with rain falling on 17 days of the month.

Back to months

Portnahaven weather in May

The average maximum daytime temperature in Portnahaven in May is a comfortable 14°C (57°F), while the average minimum night-time temperature is a cold 6°C (43°F). You can expect on average 6 hours of sunshine a day in Portnahaven during May.

• 14
  14°C max day temperature
• 6
  6 hours of sunshine per day
• 16
  16 days with some rainfall
• 6
  6°C min night temperature
• 88
  88 mm of monthly rainfall

On average 88 mm (3.5 inches) of rain normally falls in Portnahaven during May with rain falling on 16 days of the month.

Back to months

Portnahaven weather in June

The average maximum daytime temperature in Portnahaven in June is a comfortable 16°C (61°F), while the average minimum night-time temperature is a cool 8°C (46°F). You can expect on average 6 hours of sunshine a day in Portnahaven during June.

• 16
  16°C max day temperature
• 6
  6 hours of sunshine per day
• 15
  15 days with some rainfall
• 8
  8°C min night temperature
• 104
  104 mm of monthly rainfall

On average 104 mm (4.1 inches) of rain normally falls in Portnahaven during June with rain falling on 15 days of the month.

Back to months

Portnahaven weather in July

The average maximum daytime temperature in Portnahaven in July is a comfortable 18°C (64°F), while the average minimum night-time temperature is a cool 10°C (50°F). You can expect on average 5 hours of sunshine a day in Portnahaven during July.

• 18
  18°C max day temperature
• 5
  5 hours of sunshine per day
• 16
  16 days with some rainfall
• 10
  10°C min night temperature
• 114
  114 mm of monthly rainfall

On average 114 mm (4.5 inches) of rain normally falls in Portnahaven during July with rain falling on 16 days of the month.

Back to months

Portnahaven weather in August

The average maximum daytime temperature in Portnahaven in August is a comfortable 17°C (63°F), while the average minimum night-time temperature is a cool 10°C (50°F). You can expect on average 4 hours of sunshine a day in Portnahaven during August.

• 17
  17°C max day temperature
• 4
  4 hours of sunshine per day
• 18
  18 days with some rainfall
• 10
  10°C min night temperature
• 140
  140 mm of monthly rainfall

On average 140 mm (5.5 inches) of rain normally falls in Portnahaven during August with rain falling on 18 days of the month.

Back to months

Portnahaven weather in September

The average maximum daytime temperature in Portnahaven in September is a comfortable 15°C (59°F), while the average minimum night-time temperature is a cool 9°C (48°F). You can expect on average 3 hours of sunshine a day in Portnahaven during September.

• 15
  15°C max day temperature
• 3
  3 hours of sunshine per day
• 19
  19 days with some rainfall
• 9
  9°C min night temperature
• 164
  164 mm of monthly rainfall

On average 164 mm (6.5 inches) of rain normally falls in Portnahaven during September with rain falling on 19 days of the month.

Back to months

Portnahaven weather in October

The average maximum daytime temperature in Portnahaven in October is a cool 12°C (54°F), while the average minimum night-time temperature is a cold 6°C (43°F). You can expect on average 2 hours of sunshine a day in Portnahaven during October.

• 12
  12°C max day temperature
• 2
  2 hours of sunshine per day
• 21
  21 days with some rainfall
• 6
  6°C min night temperature
• 182
  182 mm of monthly rainfall

On average 182 mm (7.2 inches) of rain normally falls in Portnahaven during October with rain falling on 21 days of the month.

Back to months

Portnahaven weather in November

The average maximum daytime temperature in Portnahaven in November is a cool 9°C (48°F), while the average minimum night-time temperature is a cold 3°C (37°F). You can expect on average 2 hours of sunshine a day in Portnahaven during November.

• 9
  9°C max day temperature
• 2
  2 hours of sunshine per day
• 22
  22 days with some rainfall
• 3
  3°C min night temperature
• 196
  196 mm of monthly rainfall

On average 196 mm (7.7 inches) of rain normally falls in Portnahaven during November with rain falling on 22 days of the month.

Back to months

Portnahaven weather in December

The average maximum daytime temperature in Portnahaven in December is a cold 7°C (45°F), while the average minimum night-time temperature is a cold 2°C (36°F). You can expect on average 1 hours of sunshine a day in Portnahaven during December.

• 7
  7°C max day temperature
• 1
  1 hour of sunshine per day
• 22
  22 days with some rainfall
• 2
  2°C min night temperature
• 193
  193 mm of monthly rainfall

On average 193 mm (7.6 inches) of rain normally falls in Portnahaven during December with rain falling on 22 days of the month.

Back to months